Although I'm happy with the current front discs I would to improve the brakes by fitting a four pot disc brake system to the car, where can I locate and purchase a four pot system. Also is it possible to fit discs to the rear of the Punto and if so would this be an expensive out lay.

The cost would be in the hundreds, i'd say at least £400 for 4-pots on the front, this would most probably be second hand too. Although Hi-Spec are very well priced.

I would just say uprate the disks and pads to say Red-Dots and see how you feel with them. With regards to the rear its not really worth it but again another big-ish cost.

Maybe a set of Wilwood four pot calipers? But also, to fit disks to the rear of the puto you would ned a gt rear swing arm or similar, dont think the sportings had them Even if you found some and they fitted, you are looking at roughly a grand for the system conversion. Not worth it unless you are seriously uprating a GT or something similar. As suggested, get some red dots etc... way cheaper and a nice little improvement What mk puntyho do you have?